The utility model relates to driving structure of mechanical parking equipment for upper and lower vehicle spaces. A group of driving elements and a group of circulating chains are used and matched with each other to drive an upper platform and a lower platform to move on a mechanical parking equipment, wherein, two groups of bolts for moving the upper platform and the lower platform are arranged on the circulating chain, and brackets used for supporting the upper platform are arranged on both sides of the upper platform. Thereby, the two bolts arranged on the circulating chain are driven by the positive rotation and the reverse rotation of the driving elements. By that a clamping drive is made by the combination of the two bolts and the upper platform ant the lower platform, and action relationship of the opening and the closing of hook bodies in the brackets and the upper platform, the upper and the lower platforms are driven to move up and down and make an action of up and down movement. Therefore, the manufacturing cost of mechanical parking equipment can be reduced, and the operation flow and the maintenance work in the future can be simplified.